SOLUTION: Janet needs a new PIN for her cellphone. Her PIN must be 4 characters long consist of the digits 0-9 or symbols # or *, and cannot use any character more than once. How many differ
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Question 1059368: Janet needs a new PIN for her cellphone. Her PIN must be 4 characters long consist of the digits 0-9 or symbols # or *, and cannot use any character more than once. How many different PINs are acceptable? Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! So there are
12 choices for the first character,
11 choices for the second character,
10 choices for the third character,
9 choices for the fourth character.
